Install "git":https://git-scm.com, then @git clone http://nbl.zapto.org:4087/shared/civ5.git@.http://nbl.hopto.org:4087/shared/civ5.git@. It contains both civ5 and used modpack. Under linux, you can use @./civ5 <version@ to automatically update and launch required civ version, clearing cache if needed. If you use git, you can skip right to "Networking":#Networking